Geosciences

The annual Society of Exploration Geophys-icists (SEG) convention, held in San Antonio, Texas, presented a large showing of new technology.
Oct. 1, 2001
5 min read

New technology at SEG meeting

The annual Society of Exploration Geophys-icists (SEG) convention, held in San Antonio, Texas, presented a large showing of new technology. The following is a sampling:

  • Cirrus Logic unveiled its new 24-bit chipset (CS5371, CS5372, and CS5376) for seismic cables and streamers. The new chipset is one sixth the size of the standard set and can be configured as a four-channel analog to digital signal processor connecting geo/hydrophones to the recording system. This compares to the earlier larger single-channel chipset.
  • Paradigm Geophysical demonstrated its new unified analysis software for seismic interpretation. The integrated suite is grouped into four major sections: visual interpretation, data processing and reservoir imaging, reservoir characterization and petrophysics, and well planning and drilling. The new system is fully web enabled.
  • Cidra Optical Sensing Systems confirmed that their fiber optic multi-component system for producing wells was still in development. A light-based geophone module will capture acoustic signals in three directions to produce a seismic image of the reservoir.
  • Schlumberger Oil & Gas Information Solutions (SIS), through GeoQuest, released two software products: GeoFrame® 4 reservoir characterization system and MathCube® seismic volume calculation software. Both products use OpenSpiritTM for data access. The software can access and process 3D seismic data from multiple sources, including GeoQuest Geo-Frame® and Landmark OpenWorksTM project databases. MathCube addresses multi-attribute 4D and 4C seismic data giving the user in-house tools to quickly calculate and visualize the differences between AVO and 4D/4C seismic data volumes.
  • ZEH Software demonstrated the Image Publisher extension to Plot Express®, which provides a web browser approach to high-speed viewing of large technical images. Pan and zoom capabilities allow work groups to review images interactively before plotting or printing them.
  • Wearable computer

    Plant life above 40? north latitude has been growing more densely since 1981, demonstrating an extended growing season. Image from Liming Zhou etal., "Variations in northern vegetation activity...," Journal of Geophysical Research - Atmospheres, v.106, no. D17, pp. 20,069-20,083 (September 16, 2001).
    Click here to enlarge image
    Xybernaut Corporation is shipping the Mobile Assistant V (MA® V) wearable computer. The system features a small, rugged CPU module, incorporating a Texas Instruments' digital signal processor; an Intel Mobile Celeron 500 MHz processor; and ATI's Rage Mobility-M1TM graphics chip.

    The hands-free computer can run all versions of Windows, Linux, SCO Unix, and industry standard PC-compatible software. The wearable system developers claim to provide savings in maintenance, repair, diagnosis, inspection, inventory control, and data collection. There are many potential uses for offshore production facilities.

    EXPLORATION: Brazil 3D

    CGG won a 2,700 sq km high resolution seismic survey contract from Petrobras. The 3D survey will be shot in the Campos Basin over existing fields as a baseline survey for future 4D programs. All Petrobras' fields in the Campos Basin will be covered in the survey. The area is complex and highly obstructed with at least 30 fixed platforms. The survey will be gathered by theCGG Harmattan. Processing will start onboard the vessel and final migration will be completed by CGG's reservoir processing group in Paris, France.

    Venezuela survey

    Suelopetrol C.A., China Offshore Oil Geophysical Corp., DWS, and Cobra Energy were awarded an 8,600 km 2D survey contract by PDVSA. The competitive bid includes 9,400 km of gravity, magnetics, and bathymetry surveying plus all data processing. The deepwater survey will be shot in 3,000 meters water depth by theBin Hai 512. The survey is underway and will be completed by yearend.

    Gulf of Mexico survey

    WesternGeco'sWestern Pride, began its first Q-Marine survey in the Gulf of Mexico. The multiclient survey will cover the Hoover, Diana South, Rockefeller, Madison, and Marshall fields. The vessel will pull eight streamers, each 8,000 meters in length.

    Northwest Atlantic

    TGS-Nopec announced the completion of a 4,000-km 2D seismic survey in West Greenland/ Canadian waters. Acquisition began in July and field operations were completed early in October. The survey ties existing wells off Canada into an unexplored, highly prospective province, recently discovered during an earlier seismic program in these waters. TheM/V Zephyr-1 acquired the survey and TGS-NOPEC's computing center in Bedford, UK processed the data.

    Spain survey

    TGS-Nopec announced a 4,100-km 2D seismic survey and a 38,000-km aeromagnetic program in the Cantabrian Sea offshore Spain. Both surveys began in September and will finish by November. The Cantabrian Sea survey is the first in a series of programs the company will conduct offshore Spain. The data will be acquired by theM/V NanHai 502 towing a 6,000 m streamer. Final data will be available to oil companies during the 1Q 2002, following processing in the company's Bedford, UK processing center. Aeromagnetic data will be acquired and processed by the company's potential field group based in Norway. Final magnetic data will be available in December.

    Author's Note on SEG: My sympathies to all in the geoscience community who lost family and friends in the recent terrorist attacks, and my thanks to the SEG organizing committee, which assured the safety of delegates during the continuation of the SEG meeting. Also, special thanks goes to those companies using their presentation equipment to keep delegates informed of outside events and those companies who arranged ground transportation for stranded air travelers.

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